This 100% sync walkthrough of Assassin's Creed IV: Black Flag (the second game in the Kenway Saga to be released, though the first chronologically) continues with the second sequence.
The second sequence consists of six missions in which Edward disguises himself as Duncan Walpole and joins with the Templars in Havana. He learns of the Observatory, a device that can "follow people around and show where they" are before his true identity is discovered. Timestamps for the missions are below. As always, please enjoy, keep watching, and subscribe! :)
0:45 Lively Havana
9:39 ...And My Sugar?
23:55 Mister Walpole, I Presume?
36:02 A Man They Call the Sage
42:54 Claiming What's Due
49:02 The Treasure Fleet